Tfr
[医][=total fertility rate]总生育率
🗣️ 情景例句
I think it's a good idea, Ellen.
我觉得这是个好主意， Ellen。
The whole book is produced and edited in the pursuit of excellence.
这本书在出版和编辑全过程都力求完美。
recorded for the slumbering scientist the strength of a shock that was too weak to waken him,and the direction from which it came.
由于地震太弱而未惊醒科学家时，就为科学家记录下了地震的强度和地震方向。